Aerial matching circuit and aerial matching method

Abstract

The invention discloses an antenna matching circuit and an antenna matching method, which is capable of matching with an antenna better and enabling the antenna to receive radio frequency signals better. The antenna matching circuit is connected between the antenna and a tuner and matches with the antenna, which comprises a control circuit and a parameter regulating circuit, wherein the control circuit is connected with the parameter regulating circuit and the tuner and provides control signals to the parameter regulating circuit according to working frequency of the tuner, the parameter regulating circuit is connected with the antenna, the tuner and the control circuit respectively and regulates matching parameters under the action of control signals to vary the working frequency of the antenna matching circuit and to complete matching of the antenna. By regulating the matching parameters of the antenna matching circuit, the antenna matching circuit and the antenna matching method can match the receiving capacity of the antenna to the optimum and effectively reduce the antenna standing wave ratio.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to an antenna matching circuit and an antenna matching method. Background technique [0002] The function of the antenna matching circuit is to match the impedance of the antenna to ensure that the energy received by the receiving antenna can be transmitted to the subsequent stage for processing to the maximum extent. If the matching effect of the antenna matching circuit and the antenna is not good, that is, there is a mismatch, then at the transmitting end, the signal transmitted to the antenna will be reflected back to the transmitter, and a reflected wave will be generated in the feeder line, and the reflected wave will eventually be converted into heat when it reaches the transmitter In serious cases, it will burn out the power amplifier of the transmitter; at the receiving end, the signal reception will also be poor due to mismatch, that is, the receiving performance of t...

AI Technical Summary

Problems solved by technology

like figure 2 As shown, the abscissa indicates the frequency, the unit is Mhz; the ordinate indicates the standing wave ratio, near the frequency of 666Mhz, the standing wave ratio is 1.2, the mat

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